EP1027765A1 - Wire routing design for a rotor of an electrical machine - Google Patents
Wire routing design for a rotor of an electrical machineInfo
- Publication number
- EP1027765A1 EP1027765A1 EP98949157A EP98949157A EP1027765A1 EP 1027765 A1 EP1027765 A1 EP 1027765A1 EP 98949157 A EP98949157 A EP 98949157A EP 98949157 A EP98949157 A EP 98949157A EP 1027765 A1 EP1027765 A1 EP 1027765A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rotor
- electrical wire
- section
- radially
- slip ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/02—Connections between slip-rings and windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/46—Fastening of windings on the stator or rotor structure
- H02K3/52—Fastening salient pole windings or connections thereto
- H02K3/527—Fastening salient pole windings or connections thereto applicable to rotors only
- H02K3/528—Fastening salient pole windings or connections thereto applicable to rotors only of the claw-pole type
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49011—Commutator or slip ring assembly
Definitions
- the present invention relates generally to rotors for electrical machines, and more specifically to routing of wire for field-generating coils of such rotors.
- a rotor In many electrical machines, a rotor includes an electromagnetic field generating coil which rotates with the rotor.
- slip rings are typically provided as a part of the rotor assembly. The slip rings are means for connecting the field-generating coil to a source of electrical current.
- connection of the field generating coil to the slip rings can present reliability improvement opportunities in the design of a rotor for an electrical machine.
- the two slip rings are typically manufactured as a single assembly, with two wires extending from the assembly. A first end of each wire is welded to a respective slip ring. A second end of each wire is welded to the wire which comprises the windings of the field-generating coil. The result is four interconnections between the field-generating coil and the slip rings.
- a typical slip ring assembly is manufactured by the aforementioned welding of wires to the copper slip rings, followed by insert-moulding of this subassembly in plastic.
- the resulting slip ring assembly is a fairly expensive part, exhibiting considerable opportunity for cost reduction.
- An improved wire routing design from the field-generating coil to the slip rings may provide the ability to use more economical slip ring designs. Therefore, wire routing designs for electrical machine rotors which can provide improved reliability and reduced cost can provide advantages over the prior art.
- the present invention provides a rotor for an electrical machine.
- the rotor comprises a shaft defining an axis of rotation of the rotor, and first and second pole pieces affixed to the shaft for rotation therewith and together defining an interior cavity.
- the rotor additionally includes a slip ring affixed to the shaft for rotation therewith.
- the rotor comprises a field- generating coil disposed within the interior cavity, the coil comprising a plurality of turns of electrical wire, the electrical wire further having a section extending to and electrically coupled to the slip ring.
- the rotor has a retainer disposed exterior to the cavity and adjacent the first pole piece, the retainer comprising a radially- extending channel containing a portion of the section of electrical wire.
- Figure 1 is a perspective view of a rotor 10 according to one embodiment of the present invention.
- Figure 2 is a partially-exploded view of rotor 10 of Figure 1;
- Figure 3 is a perspective view of retainer 36 of rotor 10;
- Figure 4 is an end view of slip rings 18 and 20 of rotor 10;
- Figure 5 is an end view of the opposite end of slip rings 18 and 20 of rotor 10;
- Figures 6-8 are cross-sectional views of slip rings 18 and 20 taken along lines 6-6, 7-7 and 8-8, respectively, of Figure 4;
- Figure 9 is a front view of bobbin 24 of rotor 10; and Figure 9A is a partial view of bobbin 24, taken in the direction of arrow "A" of Figure 9.
- a rotor 10 for an electrical machine includes a first pole piece 12 and a second pole piece 14 mounted on a shaft 16 for rotation therewith. Also mounted on shaft 16 for rotation therewith are slip rings 18 and 20.
- rotor 10 as a rotor for an Lundell or "claw pole" alternator.
- Field coil 22 comprises a plurality of turns of electrical wire 23 wound about a plastic bobbin. Wire sections 26 and 28 of electrical wire 23 are routed for electrical connection to slip rings 18 and 20, respectively. Preferably, wire 23 is continuous, with no electrical joints therein except for welded connections directly to slip rings 18 and 20. Details of the connections to slip rings 18 and 20 will be discussed below.
- Bobbin 24 is preferably moulded of plastic and includes a generally cylindrical body with two radially-extending end walls. One such end wall is end wall 102, and the second end wall is obscured in Figure 9 by end wall 102. As is known in the art, a series of flaps 104 extend radially from end wall 102, and a series of flaps 106 extend radially from the second end wall. When bobbin 24 is assembled in rotor 10, flaps 104 and 106 are bent over by the pole fingers of pole pieces 12 and 14, respectively, to electrically insulate the wire in field coil 22 from the metallic pole fingers.
- Axial projection 110 includes at its end a notch 114 and axial projection 112 includes at its end a notch 116.
- Wire section 26 After emerging from field coil 22, is wrapped around "T"-shaped projection 107 of bobbin 24. Wire section 26 is further located in notch 114. Wire section 26 further is also routed in a channel 34 of a retainer 36. Wire section 26 is also wound around a post 38 of retainer 36 (post 38 being subsequently heat-staked to retain wire section 26) and then routed through an axial groove 40 in shaft 16 for connection to slip ring 18. To prevent electrical short circuits between wire section 26 and shaft 16, an insulating woven sleeve 42 is slipped over wire section 26 where wire section 26 is routed in groove 40.
- Wire section 28 is routed to slip ring 20 in an analogous manner to wire section 26.
- Retainer 36 includes a generally annular body 50 and radially-extending channels 34 and 52. Also included are posts 38 and 54. Retainer 36 is preferably made of an electrically-insulating material and more preferably of a plastic suitable for heat-staking. As indicated above, wire sections 26 and 28 are wound about posts 38 and 54, respectively. Posts 38 and 54 are then heat staked to help retain wire sections 26 and 28.
- Retainer 36 is preferably located in an axially- recessed portion of pole piece 12, such that radially- extending channels 34 and 52 are flush with or below surface 56 of pole piece 12. This facilitates attachment of a stamped fan, if desired, to surface 56.
- a stamped fan may be attached, for example, by projection welding or spot welding.
- the fan may include complementary axially- projecting radial tunnels to accommodate radially-extending channels 34 and 52 and the portions of wire sections 26 and 28 therein. The tunnels may be particularly advantageous if the axially-recessed portion of pole piece 12 is not provided to locate radially-extending channels 34 and 52 below surface 56.
- slip rings 18 and 20 are preferably identical, to provide economies of scale in their manufacture.
- Each slip ring includes a copper shell 60 and an injection-moulded phenolic plastic body 62.
- all of the copper of copper shell 60 is "integral"; that is, copper shell 60 is preferably formed in one piece, by drawing or by another suitable process.
- slip rings 18 and 20 are preferably identical, features of slip rings 18 and 20 will be labelled with simple reference numerals, except where it becomes necessary to refer to a feature of a particular slip ring 18 or 20. In such an event, an alphabetic suffix will be added to the reference number, as follows: features of slip ring 18 will have an "A" suffix added, and features of slip ring 20 will have a "B" suffix added.
- Plastic body 62 defines a bore 64 which accommodates a similarly-sized knurled end portion of shaft 16. As seen in Figure 4, one end 66 of the slip ring has a pad region 68 which accommodates the welding of the end of the relevant wire section 26 or 28.
- the ends 66 and 70 of slip rings 18 and 20 are not planar.
- pad region 68 is recessed with respect to the remainder of end 66.
- surface 72 of end 70 is recessed with respect to the remainder of end 70.
- Slip rings 18 and 20 each have two through holes 74 and 76, each hole of diameter slightly larger than wire 23. Hole 74 is located adjacent to pad region 68.
- slip rings 18 and 20 are pressed onto shaft 16 with wire section 26 extending through hole 74A and wire section 28 extending through hole 76A.
- Wire section 26 is cut to length and ultrasonically welded to pad region 68A of slip ring 18.
- Wire section 28 extends through hole 76A of slip ring 18 without making electrical connection to slip ring 18.
- Slip ring 20 is then pressed onto shaft 16 with wire section 28 extending through hole 74B of slip ring 20.
- Wire section 28 is then cut to length and welded to pad portion 68B of slip ring 20.
- slip rings 18 and 20 are rotated 180 degrees with respect to one another about the axis of shaft 16.
- Pad portion 68A of slip ring 18 and surface 72B of slip ring 20 are thus aligned, allowing space to accommodate the end of wire section 26, which has been welded to pad portion 68A.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Motor Or Generator Current Collectors (AREA)
- Synchronous Machinery (AREA)
- Windings For Motors And Generators (AREA)
Abstract
A rotor for an electrical machine according to one embodiment of the present invention comprises a shaft (16) defining an axis of rotation of the rotor, and first and second pole pieces (12, 14) affixed to the shaft (16) for rotation therewith and together defining an interior cavity. The rotor additionally includes a slip ring (18) affixed to the shaft for rotation therewith. Further, the rotor comprises a field-generating coil (22) disposed within the interior cavity, the coil (22) comprising a plurality of turns of electrical wire (23), the electrical wire further having a section (26) extending to and electrically coupled to the slip ring (18). Also, the rotor has a retainer (36) disposed exterior to the cavity and adjacent the first pole piece (12), the retainer comprising a radially-extending channel (34) containing a portion of the section (26) of electrical wire (23).
Description
WIRE ROUTING DESIGN FOR A ROTOR OF AN ELECTRICAL MACHINE
The present invention relates generally to rotors for electrical machines, and more specifically to routing of wire for field-generating coils of such rotors.
In many electrical machines, a rotor includes an electromagnetic field generating coil which rotates with the rotor. In such machines, slip rings are typically provided as a part of the rotor assembly. The slip rings are means for connecting the field-generating coil to a source of electrical current.
Connection of the field generating coil to the slip rings can present reliability improvement opportunities in the design of a rotor for an electrical machine. For example, the two slip rings are typically manufactured as a single assembly, with two wires extending from the assembly. A first end of each wire is welded to a respective slip ring. A second end of each wire is welded to the wire which comprises the windings of the field-generating coil. The result is four interconnections between the field-generating coil and the slip rings. Although such designs have been honed to a relatively high degree of reliability, a reduction in the number of interconnections can improve reliability further.
An additional area of potential improvement in prior art designs is in the cost of the slip ring assembly. A typical slip ring assembly is manufactured by the aforementioned welding of wires to the copper slip rings, followed by insert-moulding of this subassembly in plastic. The resulting slip ring assembly is a fairly expensive part, exhibiting considerable opportunity for cost reduction. An improved wire routing design from the field-generating coil to the slip rings may provide the ability to use more economical slip ring designs.
Therefore, wire routing designs for electrical machine rotors which can provide improved reliability and reduced cost can provide advantages over the prior art.
The present invention provides a rotor for an electrical machine. The rotor comprises a shaft defining an axis of rotation of the rotor, and first and second pole pieces affixed to the shaft for rotation therewith and together defining an interior cavity. The rotor additionally includes a slip ring affixed to the shaft for rotation therewith. Further, the rotor comprises a field- generating coil disposed within the interior cavity, the coil comprising a plurality of turns of electrical wire, the electrical wire further having a section extending to and electrically coupled to the slip ring. Also, the rotor has a retainer disposed exterior to the cavity and adjacent the first pole piece, the retainer comprising a radially- extending channel containing a portion of the section of electrical wire.
Designs according to the present invention can improve the reliability and reduce the cost of prior art designs. In doing so, the present invention provides advantages over the prior art.
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
Figure 1 is a perspective view of a rotor 10 according to one embodiment of the present invention;
Figure 2 is a partially-exploded view of rotor 10 of Figure 1; Figure 3 is a perspective view of retainer 36 of rotor 10;
Figure 4 is an end view of slip rings 18 and 20 of rotor 10;
Figure 5 is an end view of the opposite end of slip rings 18 and 20 of rotor 10;
Figures 6-8 are cross-sectional views of slip rings 18 and 20 taken along lines 6-6, 7-7 and 8-8, respectively, of Figure 4;
Figure 9 is a front view of bobbin 24 of rotor 10; and Figure 9A is a partial view of bobbin 24, taken in the direction of arrow "A" of Figure 9.
Refer first to Figure 1. A rotor 10 for an electrical machine includes a first pole piece 12 and a second pole piece 14 mounted on a shaft 16 for rotation therewith. Also mounted on shaft 16 for rotation therewith are slip rings 18 and 20. One will recognise rotor 10 as a rotor for an Lundell or "claw pole" alternator.
Mounted within the internal cavity formed by pole pieces 12 and 14 is a field coil 22. Field coil 22 comprises a plurality of turns of electrical wire 23 wound about a plastic bobbin. Wire sections 26 and 28 of electrical wire 23 are routed for electrical connection to slip rings 18 and 20, respectively. Preferably, wire 23 is continuous, with no electrical joints therein except for welded connections directly to slip rings 18 and 20. Details of the connections to slip rings 18 and 20 will be discussed below.
Refer additionally now to Figures 9 and 9A for a more detailed description of the bobbin 24 of field coil 22. Bobbin 24 is preferably moulded of plastic and includes a generally cylindrical body with two radially-extending end walls. One such end wall is end wall 102, and the second end wall is obscured in Figure 9 by end wall 102. As is known in the art, a series of flaps 104 extend radially from end wall 102, and a series of flaps 106 extend radially from the second end wall. When bobbin 24 is assembled in rotor 10, flaps 104 and 106 are bent over by the pole fingers of pole pieces 12 and 14, respectively, to electrically insulate the wire in field coil 22 from the metallic pole fingers. Extending radially from wall 102 and are "T"- shaped projections 107 and 108. Extending axially from wall
102 are axial projections 110 and 112. Axial projection 110 includes at its end a notch 114 and axial projection 112 includes at its end a notch 116.
Refer now particularly to Figure 1. Routing of wire sections 26 and 28 to slip rings 18 and 20 is as follows. Wire section 26, after emerging from field coil 22, is wrapped around "T"-shaped projection 107 of bobbin 24. Wire section 26 is further located in notch 114. Wire section 26 further is also routed in a channel 34 of a retainer 36. Wire section 26 is also wound around a post 38 of retainer 36 (post 38 being subsequently heat-staked to retain wire section 26) and then routed through an axial groove 40 in shaft 16 for connection to slip ring 18. To prevent electrical short circuits between wire section 26 and shaft 16, an insulating woven sleeve 42 is slipped over wire section 26 where wire section 26 is routed in groove 40.
Wire section 28 is routed to slip ring 20 in an analogous manner to wire section 26.
Retainer 36 will now be described with more particularity, with additional reference to Figure 3. Retainer 36 includes a generally annular body 50 and radially-extending channels 34 and 52. Also included are posts 38 and 54. Retainer 36 is preferably made of an electrically-insulating material and more preferably of a plastic suitable for heat-staking. As indicated above, wire sections 26 and 28 are wound about posts 38 and 54, respectively. Posts 38 and 54 are then heat staked to help retain wire sections 26 and 28.
Retainer 36 is preferably located in an axially- recessed portion of pole piece 12, such that radially- extending channels 34 and 52 are flush with or below surface 56 of pole piece 12. This facilitates attachment of a stamped fan, if desired, to surface 56. Such a fan may be attached, for example, by projection welding or spot welding. The fan may include complementary axially- projecting radial tunnels to accommodate radially-extending channels 34 and 52 and the portions of wire sections 26 and
28 therein. The tunnels may be particularly advantageous if the axially-recessed portion of pole piece 12 is not provided to locate radially-extending channels 34 and 52 below surface 56. Such tunnels in the fan may also include one or more holes through which epoxy or other adhesive may be introduced into the tunnels to add additional retention and electrical insulation to the portions of wire sections 26 and 28 which are located in radially-extending channels 34 and 52. The construction of slip rings 18 and 20 will now be discussed with additional reference to Figures 4-8. Slip rings 18 and 20 are preferably identical, to provide economies of scale in their manufacture. Each slip ring includes a copper shell 60 and an injection-moulded phenolic plastic body 62. Preferably, all of the copper of copper shell 60 is "integral"; that is, copper shell 60 is preferably formed in one piece, by drawing or by another suitable process. (Note: hereinafter, because slip rings 18 and 20 are preferably identical, features of slip rings 18 and 20 will be labelled with simple reference numerals, except where it becomes necessary to refer to a feature of a particular slip ring 18 or 20. In such an event, an alphabetic suffix will be added to the reference number, as follows: features of slip ring 18 will have an "A" suffix added, and features of slip ring 20 will have a "B" suffix added. ) Plastic body 62 defines a bore 64 which accommodates a similarly-sized knurled end portion of shaft 16. As seen in Figure 4, one end 66 of the slip ring has a pad region 68 which accommodates the welding of the end of the relevant wire section 26 or 28.
Preferably, the ends 66 and 70 of slip rings 18 and 20 are not planar. As can be seen best in Figure 6, pad region 68 is recessed with respect to the remainder of end 66. Further, surface 72 of end 70 is recessed with respect to the remainder of end 70.
Slip rings 18 and 20 each have two through holes 74 and 76, each hole of diameter slightly larger than wire 23. Hole 74 is located adjacent to pad region 68.
With additional reference to Figure 2, the installation of slip rings 18 and 20 onto shaft 16 and the termination of wire sections 26 and 28 will now be described. Once wire sections 26 and 28 have been routed into their respective axial grooves on shaft 16, slip ring 18 is pressed onto shaft 16 with wire section 26 extending through hole 74A and wire section 28 extending through hole 76A. Wire section 26 is cut to length and ultrasonically welded to pad region 68A of slip ring 18. Wire section 28 extends through hole 76A of slip ring 18 without making electrical connection to slip ring 18. Slip ring 20 is then pressed onto shaft 16 with wire section 28 extending through hole 74B of slip ring 20. Wire section 28 is then cut to length and welded to pad portion 68B of slip ring 20. One will note that as assembled, slip rings 18 and 20 are rotated 180 degrees with respect to one another about the axis of shaft 16. Pad portion 68A of slip ring 18 and surface 72B of slip ring 20 are thus aligned, allowing space to accommodate the end of wire section 26, which has been welded to pad portion 68A.
Claims
1. A rotor for an electrical machine, said rotor comprising: a shaft (16) defining an axis of rotation of said rotor; first and second pole pieces (12,14) affixed to said shaft (16) for rotation therewith and together defining an interior cavity; a first slip ring (18) affixed to said shaft for rotation therewith; a field-generating coil (22) disposed within said interior cavity, said coil (22) comprising a plurality of turns of electrical wire (23), said electrical wire further having a section (26) extending to and electrically coupled to said slip ring (18); and a retainer (36) disposed exterior to said cavity and adjacent said first pole piece (12), said retainer (36) comprising a radially-extending channel (34) containing a portion of said section (26) of electrical wire (23) .
2. A rotor as claimed in Claim 1, wherein said radially-extending channel is located in an axially-recessed portion of said first pole piece.
3. A rotor as claimed in Claim 1, wherein said retainer has a projection between said radially-extending channel and said slip ring, about said projection a second portion of said section of electrical wire is wrapped and said projection is deformed to retain said second portion of electrical wire.
4. A rotor as claimed in Claim 3, wherein said retainer comprises a generally annular body disposed about said shaft, said radially-extending channel extending from said body and said first pole piece has at least one axially-recessed portion in which said radially-extending channel and said body are disposed.
5. A rotor as claimed in Claim 4, wherein said field- generating coil further comprises a bobbin about which said turns of electrical wire are disposed; said bobbin comprises an axially-extending projection including a notch, in which a third portion of said section of electrical wire is routed.
6. A rotor as claimed in Claim 5, wherein a fourth portion of said section of electrical wire is routed in an axially-extending channel in said shaft and said fourth portion is covered with an insulating sleeve.
7. A rotor as claimed in Claim 9, wherein said bobbin further comprises a radially-extending extension about which a fifth portion of said section of electrical wire is wrapped.
8. A rotor as claimed in Claim 3, wherein: said rotor further comprises a second slip ring affixed to said shaft for rotation therewith; said electrical wire comprises a second section extending to and electrically coupled to said second slip ring; said retainer comprises a second radially-extending channel containing a portion of said second section of electrical wire; wherein said retainer has a second projection between said second radially-extending channel and said second slip ring, about said second projection a second portion of said second section of electrical wire is wrapped and said projection and said second projection are deformed to retain said second portion of said section of electrical wire and said second portion of said second section of electrical wire.
9. A rotor as claimed in Claim 1, wherein: said rotor further comprises a second slip ring affixed to said shaft for rotation therewith; said electrical wire comprises a second section extending to and electrically coupled to said second slip ring; and said retainer comprises a second radially-extending channel containing a portion of said second section of electrical wire.
10. A rotor as claimed in Claim 9 or 9, wherein said first pole piece has at least one axially-recessed portion in which said radially-extending channel and said second radially-extending channel are disposed.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US960873 | 1997-10-30 | ||
| US08/960,873 US5886451A (en) | 1997-10-30 | 1997-10-30 | Wire routing design for a rotor of an electrical machine |
| PCT/GB1998/003192 WO1999023742A1 (en) | 1997-10-30 | 1998-10-26 | Wire routing design for a rotor of an electrical machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1027765A1 true EP1027765A1 (en) | 2000-08-16 |
| EP1027765B1 EP1027765B1 (en) | 2002-06-19 |
Family
ID=25503742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP98949157A Expired - Lifetime EP1027765B1 (en) | 1997-10-30 | 1998-10-26 | Wire routing design for a rotor of an electrical machine |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5886451A (en) |
| EP (1) | EP1027765B1 (en) |
| JP (1) | JP2001522217A (en) |
| BR (1) | BR9814047A (en) |
| DE (1) | DE69806179T2 (en) |
| WO (1) | WO1999023742A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3373420A4 (en) * | 2015-11-06 | 2019-05-08 | Mitsubishi Electric Corporation | Rotor of rotating electric machine |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2791485B1 (en) * | 1999-03-26 | 2003-05-02 | Valeo Equip Electr Moteur | ROTATING MACHINE COMPRISING IMPROVED EXCITATION MEANS |
| JP3904761B2 (en) * | 1999-05-27 | 2007-04-11 | 三菱電機株式会社 | AC alternator rotor for vehicles |
| US6281610B1 (en) * | 1999-06-29 | 2001-08-28 | General Electric Company | Slip ring brush assembly and method |
| US6630765B2 (en) | 2001-01-31 | 2003-10-07 | Delphi Technologies, Inc. | Coil lead and terminal securement caps for securing wires of a rotor |
| US6847138B2 (en) * | 2002-07-25 | 2005-01-25 | Visteon Global Technologies, Inc. | Alternator field coil wire routing design |
| US6707227B1 (en) | 2002-12-11 | 2004-03-16 | Visteon Global Technologies, Inc. | High power alternator field coil |
| US20040119369A1 (en) * | 2002-12-18 | 2004-06-24 | Radtke David E. | Collector ring assembly for rotor shaft of electrical machine |
| DE102004028781A1 (en) * | 2004-06-16 | 2006-01-12 | Ascom D.O.O. | Electric machine |
| US20070267935A1 (en) * | 2006-05-16 | 2007-11-22 | York Michael T | Alternator rotor coil wire routing |
| US20080061651A1 (en) * | 2006-09-13 | 2008-03-13 | York Michael T | Bobbin for a dynamoelectric machine and method |
| KR100983929B1 (en) * | 2007-07-27 | 2010-09-28 | 한국델파이주식회사 | structure for fixing field coil and lead wire of an alternator for a vehicle, and method there of |
| JP5197750B2 (en) * | 2008-10-01 | 2013-05-15 | 三菱電機株式会社 | Rotating electric machine |
| JP4903247B2 (en) * | 2009-07-23 | 2012-03-28 | 三菱電機株式会社 | Bobbin for winding and rotating electric machine |
| FR3033100B1 (en) * | 2015-02-19 | 2018-06-15 | Valeo Equipements Electriques Moteur | ROTOR OF ROTATING MACHINE HAVING A GUIDE DEVICE |
| US11038395B2 (en) * | 2016-05-31 | 2021-06-15 | Mitsubishi Electric Corporation | Rotor of rotary electrical machine |
| DE102019206894B4 (en) * | 2019-05-13 | 2023-10-05 | Audi Ag | Electric machine |
| CN110224514B (en) * | 2019-05-31 | 2020-11-17 | 华中科技大学 | Permanent magnet axial magnetic flux electric compensation pulse generator |
| JP2022111518A (en) * | 2021-01-20 | 2022-08-01 | 日本電産株式会社 | stator and motor |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1888288A (en) * | 1930-01-31 | 1932-11-22 | Western Electric Co | Container and its method of manufacture |
| GB1090855A (en) * | 1964-08-07 | 1967-11-15 | Lucas Industries Ltd | Electrical coil assemblies |
| US3470511A (en) * | 1967-11-28 | 1969-09-30 | American Mach & Foundry | Coil and spool therefor |
| US3461414A (en) * | 1968-05-13 | 1969-08-12 | Western Electric Co | Inductive coil and method of making the same |
| US3622100A (en) * | 1968-09-20 | 1971-11-23 | Bel Tronics Corp | Bobbin with lead strain-relieving device |
| US3453575A (en) * | 1968-11-14 | 1969-07-01 | Hermetic Coil Co Inc | Electrical coil |
| JPS50488B1 (en) * | 1970-05-15 | 1975-01-09 | ||
| US3671906A (en) * | 1970-10-29 | 1972-06-20 | John Barry Hodges | Winding formers for use in the manufacture or rotor assemblies for dynamo electric machines |
| DE2539091C2 (en) * | 1975-09-03 | 1985-06-13 | Robert Bosch Gmbh, 7000 Stuttgart | Slip ring assembly |
| US4114056A (en) * | 1976-03-30 | 1978-09-12 | Nippondenso Co., Ltd. | Rotor for alternating current generator |
| US4132913A (en) * | 1976-11-22 | 1979-01-02 | Gould Inc. | Field-coil bobbin with built-in-one-shot thermal protector |
| CH642765A5 (en) * | 1979-05-31 | 1984-04-30 | Landis & Gyr Ag | COIL WITH A COIL POT WITH CONNECTING FLAGS FOR ELECTRICAL DEVICES. |
| GB2032707B (en) * | 1979-10-01 | 1983-01-12 | Ducellier & Cie | Rotor of an electrical generator |
| US4318069A (en) * | 1979-11-23 | 1982-03-02 | Polaroid Corporation | Bobbin with terminal block designed for machine wrap |
| DE3025735A1 (en) * | 1980-07-08 | 1982-02-04 | Robert Bosch Gmbh, 7000 Stuttgart | ELECTRIC MACHINE |
| JPS6048365U (en) * | 1983-09-05 | 1985-04-05 | 三菱電機株式会社 | rotor of rotating electric machine |
| JPS6073367U (en) * | 1983-10-25 | 1985-05-23 | 三菱電機株式会社 | rotor of rotating electric machine |
| US4588915A (en) * | 1984-12-14 | 1986-05-13 | General Motors Corporation | Alternating current generator rotor |
| US5264816A (en) * | 1991-01-09 | 1993-11-23 | Furnas Electric Company | Electrical winding termination structure |
| US5325003A (en) * | 1992-11-23 | 1994-06-28 | Ford Motor Company | Molded rotor assembly for an alternator and method for making the same |
| US5327037A (en) * | 1992-11-23 | 1994-07-05 | Ford Motor Company | Automotive alternator slip ring assembly |
| JPH08205496A (en) * | 1995-01-26 | 1996-08-09 | Hitachi Ltd | Rotor of ac generator for vehicle |
| US5543676A (en) * | 1995-03-16 | 1996-08-06 | Ford Motor Company | Rotating electrical machine with magnetic inserts |
| US5625244A (en) * | 1995-09-25 | 1997-04-29 | General Motors Corporation | Fan and slip ring assembly |
-
1997
- 1997-10-30 US US08/960,873 patent/US5886451A/en not_active Expired - Fee Related
-
1998
- 1998-10-26 EP EP98949157A patent/EP1027765B1/en not_active Expired - Lifetime
- 1998-10-26 BR BR9814047-7A patent/BR9814047A/en not_active Application Discontinuation
- 1998-10-26 DE DE69806179T patent/DE69806179T2/en not_active Expired - Lifetime
- 1998-10-26 WO PCT/GB1998/003192 patent/WO1999023742A1/en active IP Right Grant
- 1998-10-26 JP JP2000519496A patent/JP2001522217A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9923742A1 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3373420A4 (en) * | 2015-11-06 | 2019-05-08 | Mitsubishi Electric Corporation | Rotor of rotating electric machine |
| US10848028B2 (en) | 2015-11-06 | 2020-11-24 | Mitsubishi Electric Corporation | Rotor of rotating electric machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1027765B1 (en) | 2002-06-19 |
| JP2001522217A (en) | 2001-11-13 |
| WO1999023742A1 (en) | 1999-05-14 |
| DE69806179T2 (en) | 2003-01-30 |
| US5886451A (en) | 1999-03-23 |
| DE69806179D1 (en) | 2002-07-25 |
| BR9814047A (en) | 2000-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1027765B1 (en) | Wire routing design for a rotor of an electrical machine | |
| US11557936B2 (en) | Motor including a bearing holder with through-holes | |
| US5270604A (en) | Tandem field alternator having an improved coil and slip ring connection and method of making the same | |
| US6628023B1 (en) | Motor vehicle alternator with winding insulated from the housing | |
| KR101287230B1 (en) | Stator for dynamo-electric machine | |
| US5625244A (en) | Fan and slip ring assembly | |
| US6333579B1 (en) | Stator for outer rotor-type multi-pole generator | |
| US20060043806A1 (en) | Stator and motor | |
| EP1184957A2 (en) | Electric motor | |
| US8089183B2 (en) | Lead frame connector | |
| EP1551091B1 (en) | Stator for outer rotor multipole generator and method of assembling the stator | |
| US6700262B2 (en) | Rotary electric machine | |
| US8362664B2 (en) | Rotating electrical machine | |
| EP0913894B1 (en) | Slip ring design for a rotor of an electrical machine | |
| US6552468B2 (en) | Rotor | |
| US4820951A (en) | Multiphase small size brushless DC motor | |
| US6369471B1 (en) | Slip ring end (SRE) fan having coil lead retention feature | |
| US7352098B2 (en) | Insulator | |
| JP2001286085A (en) | Core insulator for rotor of motor | |
| US9231455B2 (en) | Electrical machine having a contact element for electrically connecting electrical components | |
| US20230134351A1 (en) | Two-piece end turn winding support | |
| JP3156498B2 (en) | Armature of commutator type rotating electric machine | |
| KR20010110780A (en) | End shield for a commutator machine and a method for producing such an end shield | |
| JPH08111969A (en) | Stator for permanent-magnet generator | |
| KR20020081385A (en) | Component for the rotor or stator of an electrical machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20000415 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 17Q | First examination report despatched |
Effective date: 20011113 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20020619 |
|
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
| REF | Corresponds to: |
Ref document number: 69806179 Country of ref document: DE Date of ref document: 20020725 |
|
| RAP2 | Party data changed (patent owner data changed or rights of a patent transferred) |
Owner name: FORD MOTOR COMPANY LIMITED Owner name: FORD MOTOR COMPANY |
|
| EN | Fr: translation not filed | ||
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed |
Effective date: 20030320 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20091026 Year of fee payment: 12 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20091022 Year of fee payment: 12 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20101026 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20101026 |
|
| REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 69806179 Country of ref document: DE Effective date: 20110502 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20110502 |